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| 40 | /*! \page qtsingleapplication-example-trivial.html |
| 41 | \title A Trivial Example |
| 42 | |
| 43 | The application in this example has a log-view that displays |
| 44 | messages sent by further instances of the same application. |
| 45 | |
| 46 | The example demonstrates the use of the QtSingleApplication |
| 47 | class to detect and communicate with a running instance of |
| 48 | the application using the sendMessage() API. The messageReceived() |
| 49 | signal is used to display received messages in a QTextEdit log. |
| 50 | |
| 51 | \quotefromfile trivial/main.cpp |
| 52 | \printuntil instance |
| 53 | The example has only the \c main entry point function. |
| 54 | A QtSingleApplication object is created immediately. |
| 55 | |
| 56 | \printuntil return |
| 57 | If another instance of this application is already running, |
| 58 | sendMessage() will succeed, and this instance just exits |
| 59 | immediately. |
| 60 | |
| 61 | \printuntil show() |
| 62 | Otherwise the instance continues as normal and creates the |
| 63 | user interface. |
| 64 | |
| 65 | \printuntil return instance.exec(); |
| 66 | The \c logview object is also set as the application's activation |
| 67 | window. Every time a message is received, the window will be raised |
| 68 | and activated automatically. |
| 69 | |
| 70 | The messageReceived() signal is also connected to the QTextEdit's |
| 71 | append() slot. Every message received from further instances of |
| 72 | this application will be displayed in the log. |
| 73 | |
| 74 | Finally the event loop is entered. |
| 75 | */ |